Express Wheels Green Farm Tractor with Yellow Trailer Attachment Green farm tractor with yellow trailer attachment - Part of the Express Wheels Farm Playset series. Manufactured with both diecast metal and plastic, these are durable and made to last. While entertaining for children as a toy, this could also be used as an accessory for a miniature village, town, model train track layout, etc. There are 6 different Express Wheels farm tractor and trailer models available (each sold separately). The different tractor equipment attachments can be used with any of the tractors. The toy tractors and equipment attachment feature working wheels and the attachment has moving parts! Size: 6 in X 1.75 in X 1.75 in. Ages 3+